Yes, trains are equipped with hand brakes (also known as "parking brakes" or "staff brakes") as a critical high-fidelity safety requirement. While the primary braking system on a modern train uses compressed air (Westingouse system) or vacuum pressure to stop while moving, these systems can leak over time when the locomotive is shut down. The hand brake provides a mechanical lock that prevents a stationary train or individual railcar from rolling away due to gravity. On freight cars, the hand brake is usually a large "High-Fidelity" wheel located at one end of the car; a crew member must physically turn the wheel to tighten a chain that presses the brake shoes against the wheels. On modern passenger trains and light rail vehicles, the "Hand Brake" is often a spring-applied, electrically-released system controlled by a switch in the cab. Ensuring the hand brake is "Set" before uncoupling a car is a fundamental safety necessity in the railway industry to prevent runaway train incidents, which have historically caused catastrophic damage when safety protocols were ignored.